Speaking to The Guardian, Google co-founder Sergey Brin adamantly expressed his concerns about the “very powerful forces that have lined up against the open Internet on all sides and around the world.”

Brin cited the likes of China and Saudi Arabia, countries in which governments heavily censor the Internet. He reserved his harshest criticisms, though, for Google competitors Apple and Facebook, for the limitations imposed by their proprietary software platforms.

“You have to play by their rules, which are really restrictive,” he said of Facebook. “The kind of environment that we developed Google in, the reason that we were able to develop a search engine, is the web was so open. Once you get too many rules, that will stifle innovation.”

Of course, Facebook and Apple are also stifling his profits, so take his words with a grain of salt.